7M50

Crystallographic structure of a cubic crystal form of STMV grown from ammonium sulfate

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	279	Crystals were grown by sitting drop vapor diffusion in Cryschem plates using 0.6 ml reservoirs. Drops were 6 to 8 ul and were composed of equal volumes of a 5 mg/ml virus stock solution containing 0.1 M phosphate at pH 6.5, and the reservoir solution. The reservoir solution was 18% ammonium sulfate in 0.1 M phosphate at pH 6.0. Crystallization was carried out at 4 degrees C.

Crystal Properties
Matthews coefficient	Solvent content
2.66	53.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 234.05	α = 90
b = 234.05	β = 90
c = 234.05	γ = 90

Symmetry
Space Group	P 2 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	173	CCD	MAR CCD 165 mm		2002-06-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	1.0	ALS	8.3.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	CC (Half)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.3	80	0.99	0.18	0.18	0.91	12.8	10.17		159229			28

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.35	0.25		0.32	0.41	1.3	1.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	4OQ8	2.31	74.01	493.22	159178	2152	85.95	0.2484	0.2459	0.2708	9.25

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	11.3581
f_angle_d	0.4896
f_chiral_restr	0.0522
f_plane_restr	0.0042
f_bond_d	0.0016

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	22607
Nucleic Acid Atoms	2796
Solvent Atoms	4318
Heterogen Atoms	66

Software

Software
Software Name	Purpose
PHENIX	refinement
d*TREK	data reduction
d*TREK	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.